PURPOSES : The purpose of this study was to select recurring congested sections through an objective and reasonable method using intelligent transportation system (ITS) collection data as the first phase for controlling recurring congested sections. The selection is meant to enhance the utilization of national highway ITS collection data that are just managed as statistical data focusing on real-time traffic information or not satisfactorily used. METHODS : Hourly statistical data were obtained using travel speed with a 5-min frequency per information-providing section stored in the database server. The travel speed data were collected from field equipment in general national highway sections (793.8 km in 380 sections of 16 lines in 2017) in the Seoul Metropolitan Area through a literature review of congestion standards. Subsequently, the congested sections were drawn by dividing a month into weekdays and weekends, and the status of the monthly change and characteristics of the congested sections were analyzed. Based on the monthly data on the congested sections, monthly mean congested days and hours were calculated to select the significant recurring congested sections in 2017 and applied to the congestion frequency standard. RESULTS : Recurring congested sections occurred in seven sections (33.9 km) in three lines — in five sections (24.8 km) of two lines during the weekdays and in two sections (9.1 km) of one line during the weekends. The recurring congested sections selected based on the congested days and the recurring congested sections selected based on the congested hours were found to be the same. The recurring congested sections during the weekdays and weekends were not mutually duplicated and were divided. More congestion occurred during the weekdays than on weekends. CONCLUSIONS : In the seven sections selected as recurring congested sections, congestion occurred for more than six months during one year, indicating that congestion is concentrated in specific months, albeit continuously and repeatedly occurring over the long term. The recurring congestion section selection standard and method used in this study are considered to be objective and reasonable. If recurring congested sections are selected using the standard and method presented in this study using ITS collection data targeting general national highways nationwide in the Seoul Metropolitan Area, it is necessary to determine whether the standard and method reflect actual congestion situations satisfactorily. According to the result, a further study considering congestion speed and congestion frequency standards is needed.

The Commission for Conservation of Antarctic Marine Living Resources (CCAMLR) is utilized to manage krill resources using acoustic data collection and a scientific observer program operating on the fishing boats. However, the acoustic data were contained seriously noise, example of background, spike, and intermittent noise, due to purpose of fish boats. In this study, the noise removal techniques were confirmed the potential of the acoustic data analysis. Acoustic system and frequency used in the survey were commercial echosounder (ES70, SIMRAD) and 200 kHz split beam transducer. Acoustic data were analyzed using Echoview software (Myriax), and general data analysis and new noise removal method was used. Although a variety of noise, most of the noises have been removed using the noise removal processing. We confirmed the possibility of analyzing the acoustic data obtained from fish boats. The results will be useful for analysis of the acoustic data acquired from krill fishing boats.

한반도와 주변 수역의 이름에 대한 논의는 국제적인 관심사가 되고 있다. 이러한 논의의 과정에서 유럽에서 제작된 다양한 지도상에 나타나는 수역의 명칭에 대한 연구는 다수 진행되었으나, 실제 어떤 자료가 각 국가들의 지명에 대한 입장에 영향을 미쳤는지는 파악되지 않았다. 본 연구에서는 영국의 국립기록보존관이 소장하고 있는 1920년대 이전에 간행된 한국과 한반도 주변 지역에 대한 지도 자료들을 조사하였다. 해당 자료들은 영국 정부의 공문서로 남은 자료들로 당시 영국정부가 직접 제작하거나, 수집한 지도 자료들로 구성되어있다. 여기에는 영국전쟁성의 자료가 포함되어 있으며 이에 대해서는 별도로 다루었다. 당시 영국 정부는 항해와 군사적인 목적으로 보았을 때 실용적인 자료들, 그리고 근대 지도학적인 관점으로 보았을 때 가치가 있다고 추정되어진 자료들을 주로 수집한 것으로 나타났다. 즉, 19세기 중반 이후에 간행되고, 경위선과 삼각점과 같은 근대 측량의 기법에 가까우며, 위치 정보가 명확히 드러나 있는 자료들이 주류를 이루고 있다. 영국 정부 자체가 생산한 한국에 관한 자료들은 중국과 일본에 주재하던 영국군 무관들에 의해서 수집, 제작되었으며, 일본이 제작한 지도들이 상당한 영향을 준 것으로 볼 수 있다. 한국에 대한 전면적인 근대적인 방식의 측량이 한국의 국권 상실 이후 이뤄진 것을 감안한다면, 지리적 좌표 등에 대한 사항은 불가피한 면이 있다고 보여진다. 그러나 앞서 논의한 것과 마찬가지로 당시의 지리정보에 대한 정의에는 당시의 근대적 사고가 배경에 깔려 있음을 유의해야 할 것이다. 당시 영국 정부 기관과 지도 제작자들은 지도에 표기하기 위한 지명을 확인하기 위하여 일본에서 획득된 정보들을 수합한 지명 요록을 사용하였다. 특히 영국 외교관인 어네스트 사토우, 일본인 곤도 마코토, 고토 분지로의 한국 관련 지명의 정리가 당시 서양 국가들의 한반도와 인근 지역 지명의 표기에 상당한 영향을 준 것으로 나타났다.

Climate change has increased the number of floods and inundation on farmland. Recently various mobile applications through inundation mapping, flood forecasts and evacuation routes have been developed for the prevention and reduction of flood damages. However, most of current prevention systems for farmland flooding are still web-based systems relying on the field survey which needs a lot of human and time resources although mobile devices has been rapidly improved and widely used. The purpose of this study is to design a mobile application for preventing and reducing farmland flood and inundation damages and collecting damage information in real time. We put advanced mobile device functions such as GPS, network communications, cameras into our system design. This system implement 2way communication and intuitive application that will increase information efficiency and decrease flood damage. Our design has been tested through previous flooding data of Jinju city in 2010.

This study aimed at establishing the multi-ranged approach on data acquisition technique for rural landscape planning, which tried categorization, grading and transferring of landscape elements in the more detailed level. For the systematic management of database for the topographic informations in the village level, a kind of the aerial photographing techniques with UAV(Unmanned Aerial Vehicle) was used and its resultant data for the landscape simulation of the rural village, which in turn helped the convenient approach to understanding of its comprehensive spatial structure. The image data from aerial photography was systematically processed through; First, after revision of the distorted one, the image map was adjusted with the topographical and cadastral maps. Second, the farm houses and buildings, and other facilities difficult to find out in the topographical map was digitally read from the adjusted image. The topographical landscape view of rural village was simulated on the base of DEM(Digital Elevation Model) and the 3-dimensional shapes of farm houses and buildings were automatically modelled using the input system developed by the author. In conclusion, the aerial image information adjusted with the edited maps could give more intuitive and detailed villagescape than the ordinary one and through landscape simulation of the rural village, its topography, features of houses/buildings and spatial distribution of land uses were effectively reproduced. And, by the linkage between field survey and photographed/simulated results of the typical landscape elements using hyper-link method, it would be expected to develop as an effective visualization technique of rural landscape.

도내 중산간지대 농업개발 지원을 위해 필요한 기후자료를 수집하고 수집된 자료로부터 농업기후지수의 하나인 증발산위를 계산하는 과정에 대하여 연구하였다. 섬의 동쪽과 서쪽 중산간지대 기후를 대표할 수 있는 두 지점에 무인관칙소를 설치하고 퍼스컴통신 기술을 이용해 일사, 기온, 지온, 습도, 풍향, 풍속 및 항수자료를 수집하였다. 1989년 6월 한달간 수집된 자료를 이용해 두 지점간 일기상 특성을 분석하였으며, Penman식에 의해 증발산위값을 추정하였다. 상대적으로 풍부한 순폭사에너지와 남서기류에 의한 Fohn현상에 의해 섬의 동쪽 중산간지대가 서쪽에 비해 1-2도 가량 높은 기온을 유지하였다. 지온은 두 지점간에 차이가 없었으며 최고 및 최저온도 출현시각은 기온에 비해 4시간 지연되었다. 바람은 서쪽에서 강했으며 주야간 해륙풍 순환 현상도 동쪽에 비해 뚜렷하였다. 계산된 증발산위값은 동쪽이 서쪽에 비해 6% 높았으며 해안지대 추정값에 비해 30% 가량 높았다.